<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>列表过滤</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    <div id="root">
        <h2>{{titl}}</h2>
        <input type="text" v-model:value="keyword" placeholder="请输入搜索关键字" />
        <ul>
            <li v-for="(p,index) in filePersons" :key="p.id">
                {{p.name}} -- {{p.age}}
            </li>
        </ul>
    </div>



    <script>
        const vm = new Vue({
            el:"#root",
            data() {
                return {
                    titl:"人员列表信息",
                    persions:[
                        {id:"001",name:"马冬梅",age:18},
                        {id:"002",name:"周冬雨",age:19},
                        {id:"003",name:"周杰伦",age:25},
                        {id:"004",name:"特伦苏",age:46}
                    ],
                    keyword:'',
                    searchP:[]
                }
            },
            watch:{
                keyword:{   //监听的完全写法
                    immediate:true,
                    handler(val){
                        this.searchP = this.persions.filter((p)=>{
                            // filters()方法不改变原数组，返回一个新的数组
                            return p.name.indexOf(val) !== -1
                        })
                    }
                }      
            },
            computed:{
                filePersons(){
                    return this.persions.filter((p)=>{
                        return p.name.indexOf(this.keyword) !== -1
                    })
                }
            }
        })
    </script>
    
</body>
</html>